Adding-machine.



G. N. HIN'GHMAN.

ADDING MACHINE. APPLIUATION FILED OCT. 24, 1907.

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ADDING MACHINE.

APPLICATION FILED 00124, 1907.

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} ATTORNEY G. N. HINGHMAN.

NG MACHINE. APPLIO 0N FILED OCT. 24, 1907.

G N. Hinchman WITNESSES I I .WLWL

G. N. HINCHMAN.

ADDING MACHINE. APPLICATION FILED OUT. 24, 1907,

899,398. Patented Sept. 22, 1908.

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WITNESSES. l/VVE/VTOR W 6/. WW I G. N. Hinchman.

ATTORNEY.

GEORGE N. HINCHMAN, OF WEBSTER GROVES, MISSOURI.

ADDING-MACHINE.

Specification of Letters Patent.

Patented. Sept. 22, 1908.

Application filed October 2%,.1907. Serial No. 399,018.

To all whom it may concern:

Be-it known that I, GEORGE N. Hmon- MAN, a citizen of the United States, residing at Webster Groves, in the county of St.

Louis and State of Missouri, have invented certain new and useful Improvements in Adding-Machines, of which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to improvements in adding machines and more particularly tov improvements 1n that type ot adding ma-.

chines shown and described in Letters Patent No. 683,939 granted to William W. Hopkins, Oct. 8, 1901.. Many of the features of my invention, however, are adapted to use in connection with adding machines of different types.

The object of my invention is to adapt adding machines of the type above referred to 'or of similar types to use in connection with numbers, the various orders or denominations of which do not bear a decimal rela-- chine; Fig. 2 is a top plan view of the key bars and adjacent parts; Fig. 3 is an enlarged sectionalview of theaddin'g, printing and carrying mechanism in the ence order of the machine; Fig. 4 is an en arged .view of the adding and ca rrying mechanism in the left hand shillings order of the mach ne Fig. 5 is a sectional view showing the. order key bars and locks for the same; Fig. 6 is a development of the three right hard printing wheels; Fig. 7 is an erd elevation of the carriage and adjacent parts, Fig. 8 is an enlarged view of one of the locks for the numeral keys; Fig. 9 is a View similar .to Fig. 8

but looking from the opposite direction; Fig

10 is a top plan viewof the parts shown in Figs. 8 and 9 and Fig. 11 is a front elevation of another look for the numeral keys.

Like marks of reference refer to similar parts in the several views of the drawings.

The main parts of the machine are similar to the parts shown and described in. the patent to Hopkins above'referred to and need not be described in detail.

The general operation of the machine is as follows: In writing a number in the machine, one of the order keys 15 corresponding with the left hand order in 'the number to be written into the machine, is depressed. The depression of this key releases the carriage 16 and at the same time throws into the path of the stop 17 on said carriage the rear end of theorder key bar 18. The depression of the key thus ositions the car- 'riage 16 in the proper p ace to begin the registration of the number. The positioning of the carriage 16 also positions the sliding gear 19 so that said gear meshes with an intermediate gear 20 in the order corresponding to the left hand digit of the number to be written. This gear 19 slides on a shaft 24 which is driven from a wheel 25 connected through. an escape nent wheel 26 with a spring motor 27. The amount of movement of the wheels 25 and 26 is determined by a rack 28 adapted to be thrown into engagement with the wheel 25 by means of the numeral keys 29. The rear ends of the numeral key bars 30 detcrminethe amount of movement of the rack 28, as is fully de scribed in the Hopkins patent above referred to, so that when one of the numeral keys 29 is'depressed the slidinggear 19 is rotated through a distance corresponding to the numeral'key depressed.

The intermediate wheel 20 above referred to mesheswith a spur wheel 31 rigidly attached to a printing wheel 32 and with an adding Wheel 36. The adding wheel 36 is carried by a frame 37 so that it may be moved into and out of mesh with the wheel A. second pivoted frame 38 is provided with carrying bars adapted to engage with the wheels 36 when it is necessary to carry a unit in one order from the next lower order. Afterthe carriage 16 has been positioned as above described so to bring the 'sliding gear 19 into engr einent with the b proper intermediate gear 20 the sa d in mediate gear stands in mesh with its corresponding gear 31 and the corresponding digit and the corresponding adding wheel will be moved through a distance corresponding to the same digit. As each successive numeral key is depressed the sliding gear 19 is moved step by step toward the right of the machine so as to successively position the different printing and adding wheels. When the writing of the number is completed the machine is operated throu h the usual handle to return the various intermediate and rinting wheels to zero position. The adding wheels 36 however, are lifted out of engagement with the intermediate wheels so that the number remains in the adding Wheels and at the same time the adding Wheels are brought into engagement with the carrying bars 39 so as to carry forward one in any order in which said carrying bars have been positioned to carry.

The parts above described are similar in construction and operation to those shown in the patent to Hopkins above referred to and are only illustrated and described to be change enable the operation of my im rovements to be clearly understood. In al the orders in the machines in which ten units make one unit of the next higherdenomination, interordinary denominations. In the left hand order, however, the wheels differ as will be hereinafter more fully described. In the pence order of the machine twelve units are required to make one of the next higher denomination and in this order I use but a single wheel and adapt the same to be operated twice in succession when 10 or 11 pence are to be added. From this it will be seen that in adapting the machine for the British monetary. system only two of the orders need from the ordinary construction used in addin decimal numbers.

In the left and shillings order the intermediate wheel 20 is of the usual construction.

It meshes with a printing wheel 40 which is i shown developed in Fig. 6 and which differs ever, of only being suppliedwith two carr ing teeth or lugs 42, as are the other wheels,

the comb 44 for returning the wheel to zero.

The carrying pawl 45 upon the carrying bar 39 corresponding to the wheel 41 is slidingly mounted upon the said bar 39, as shown in Fig. 4. The pawl 45 is provided with a slot 46 through which passes a pin 47 provided with an enlarged head for holding the and in position. The pawl 45 is normally he (-1 in its forward position by means of a 5 ring 48 attached at one end to said pawl an at the other to a pin 49 in the carrying bar 39. This sliding mountin of the pawl 45 allows the pawl to move bac wardly out of the path of the extra carryin teeth 43 of the Wheel 41 when the said wheeT is returned to zero position by the comb 44.

The intermediate wheel 50 on the right hand or pence order differs from the intermediate wheels 20 on the other orders in that it is provided with twenty-four teeth in place of twenty. In order, however, that the sliding gear 19 may mesh with this intermediate gear in the same manner as with the other gears 20, this gear 50 must be made of approximately the same diameter as the gears 20. It must also mesh with the gear 19. It is thus seen that gears of approximately the same diameter having a different number of teeth and consequently different pitches, must mesh together. This cannot be accomplished with the ordinary form of gearing and I have therefore devised a form of gearing shown in detail in Fig. 3. As will be seen in this figure the teeth of the gear 50 are much narrower than the teeth of the gear 19 with which it meshes. The gear 50 must also mesh with a gear 51 carrying a printing wheel 52 on the ri ht hand or pence order, and also with the a ding wheel53 on the said order: These gears 51 and 53 must contain twenty-four teeth each like the gear 50. It is. evident that the gear 50 will not mesh w ith a gear of equal size having twenty-four teeth if the teeth be either made in the ordinary way or similar to the teeth of the gear 50. I have, therefore provided the said gears 51 and 53 with the form of teeth shown in Fig. 3 of the drawings, said teeth being Wider than the ordinary teeth and rounded at the ends. I find that with this form of gears the gear 50 will run both with the gear 19 having a less number'ofteeth and with the gears 51 and 53 having an equal number of teeth. The

printing wheel 52, shown developed in Fig. 6,

is provided with digits from zero to 1]. As the numeral keys 29 of the machine are only 9 in number it is evident that the machine -must be operated twice in the pence order also evident that in the left hand shillings order means must be provided for reventing the numeral keys above the 1 key rom being .depressed as the printing wheel in said order is provided only with the characters 0 and 1. The mechanism for accomplishing this to. gether with the mechanism for allowing the machine to feed twice in the pence order will now be described.

55 is a pivot-arm carried on the frame of the machine at 56 and having its rear end attached by means of a rod 57 to the feed rack 58 on the carriage 16 so that the said arm 55 must move with the carriage 16. The arm 55 has a forwardly projecting lever 59 provided with a downwardly projecting pin 60.

- This pin 60 is adapted to come into contact v the left hand shillings column.

with a finger 6] projecting rearwardly from a sliding comb 62 mounted on a fixed comb 63 and arranged below the key bars of the order and numeral keys. This sliding comb 62 is provided with eight teeth so that when moved a slight distance by the-pin 60 the said teethwill be moved under the numeral key bars and lock all said bars against movement except the bars of the 1 and 0 keys. When, however, the comb is moved slightly farther the teeth of the said comb will be moved from in under the key bars and will not interfere with their depression. The object of this comb is to lock the keys except'the 1 and 0 keys when the carriage of the machine is in The comb is held in its normal position when the finger 61 is out of contact with the pin 60, by means of a coil spring 65. Slidingly mounted on the rear face of the fixed comb 63 is a second sliding comb 66 which is o erated from the handle shaft 67 by means 0 a lever 68 in the usual manner so as to look all the keys, both numeral and order, when the handle is in. its

forward position.

the 0 key. These teeth, however, are so arranged that u on the first movement ofthe comb only eig t of the keys are locked, the 1 and 2 key being left free to move. When, however, the comb is moved a slightlv greater distance, all the keys will be locked against movement. The movement of the comb 70 is caused by means of a feed pawl 71 slidingly mounted on the plate 69 and engaging with a rack 72 carried by the comb 70. This feed pawl 71 projects beyond the plate 69 as shown in Figs. 8 and 9 and is adapted to be struck by the lever 59 carried on the pivoted arm 55 and hereinbefore described. The feed pawl 71 is normally held in its retracted position by means of a coil spring 73 secured at one end to said feed pawl and at the other to the plate 69. The comb 70 is fed towards the left through a distance of one pence is 10 or 11.

tooth when the number of pence in the num distance of two teeth when the number of the left I pivot to the opposite side of the plate 69 a retaining pawl 74. This pawl 74 is normally held in engagement with the rack 72 by means of a coil spring 75 secured at one end to said pawl and at the other to the comb 70. As has been hereinbefore stated, it is necessary to have the carriage of the machine remain in the right hand or pence order while the key-board is twice operated. This is accomplished by means of mechanism which will be hereinafter described. The result of such feeding twice in the right hand order is that after the'arm 59 has come into contact with the feed pawl 71 and fed the comb 70 a distance of one tooth toward the left so as to lock all the numeral keys except the 1 and 2, the 1 and 2 keys only can be operated for the second-time inthe said order, after which the arm 59 retreats a slight distance so as to allow the feed pawl 71 to retreat one tooth and then again feeds for ward and moves the comb 70 a farther distance so as to lock all the numeral key bars as is shown in Fig. 2. This latter position of the comb looking all the k'ey bars performs the function of the end of the line lock shown in the Hopkins patent above referred to, as such lock cannot be used in a machine in which the key-board is operated twice while the carriage remains in the last order. In order to allow the carriage of the machine to remain in the last order while the key-board is twice operated the left hand tooth of the feed rack 58 on the carriage extends only half way across the rack as is shown in Fig. 2. The rack is fed forward by means of a feed pawl 77 and is prevented from returning by means of a retaining pawl 78. When, however, the last order 18 reached the portion of the teeth which would be engaged by the re taining pawl 78 being omitted the carriage will return to its former position and this could be continued indefinitely but for the locking device hereinbefore described.

'The locking device hereinbefore described must be released before the registration of a new number can be begun. Inorder to ac complish this releasing I provide a lever 80. Figs. 2 and 5, which projects below the feed pawl 71 and retaining pawl 74 engaging with the rack 72. When this lever 80 1s rocked on its pivot it releases both of these pawls from the rack 72 so that the spring 75 may return the comb 70 to its normal position and leave all the keys free to be operated. The rear end of the lever 80 is provided with a pin 81 upon which bears the forward end of an arm 82 carried-by a cradle 83 which is rocked upon the operation of one of the order keys 1-5.

In order to retain the. comb 70 in position after it has been fed to & 899,898

The operation of the various locking devices is as follows: When the carriage is positioned to begin a registration of the number the arm 59 is moved toward the rightand away from the various locking devices. As the carriage is moved step by steptowards the right hand end of the machine by the op 'eration of the various numeral keys the arm 59 is moved toward the left until when the left hand shillings order is reached the pin 60 on said arm 59 comes in contact with the finger 61 and moves the comb 62 in such posi tion that only the 1 and keys can be operated. If the amount of shillings is from 1 to 9- the 0 key is now operated to move the car- 'riage into the next order or right hand column of shillings. If, however, the number is between 11 and 19 the 1 key is depressed to add 1 in the left hand shillings column. After either the 1 or 0 key is depressed the further movement of the arm 59 moves the comb 62 farther towards the left hand endpf the machine and thus releases all of the keys so'that in the right hand shillings column any of the numeral keys may be depressed to add from 1 to 9. The further movement of the carriage into the next or pence order brings the arm 59 into contact with the end of the feed pawl 71 and thus feeds the comb a distance to the left equal to one tooth of the rack 72 so that after the machine has been operated once in the pence column all the numeral keys except the 1 and 2 are locked. In case the number of pence has been 9 or less this will complete the registration of the number. In case, however, the number of pence is 10 or 11, the 9 key will be depressed the first time in this order and then the 1 or the 2 key. When the machine is operated the second time in the order the.

arm 59 will retreat and again move forward so as to move the comb 70- toward the left a distance equal to two teeth on the rack 72 and thus lock all the numeral keys which keys will then remain in this position until the order keys are unlocked by the pull of the handle and in turn by their operation unlock the numeral keys by releasing the pawls 71 and 74 as has been hereinbefore described.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In an adding machine, the combination with adding wheels, of a wheel adapted to mesh therewith, said wheels differing both as to the width of their teeth and the spaces between the teeth, numeral keys,.and means for controlling said second wheel from said numeral keys.

2. In an adding machine, the combination with an adding wheel, of a wheel adapted to mesh therewith, said wheels differing both as to the width of their teeth and the spaces between the teeth, and also differing as to the contour of their teeth, numeral keys, and

means for controlling said second wheel froi said numeral keys. 1

3. In an adding machine, the combination with an adding wheel, of a wheel adapted to for controlling said third wheel from said nu-' meral keys.

4. In an adding machine, the combination with a plurality of gears approximately of.

the same diameter but having different numbers, of teeth, of a toothed member successively engaging directly with said gears, keys controlling the movement of said toothed member, and adding mechanism operated from said gears.

5. In an adding machine, the combination with a plurality of gears of ap roximately the same diameter but having di erent'numbers of teeth, of a toothed member adapted to coeperate directly with said gears, said,

toothed member engaging with a part of saidgears on its pitch line and with another part of said gears beyond its pitch line, numeral keys, and means for controlling said toothed member from said numeral keys.

6. In an adding machine, the combination with a plurality of gears of ap roximately the same diameter but having different nunibers of teeth, of a toothed member adapted to 006 erate directly with said gears, said toothed member engaging with a part of said gears on its pitch line and with another part of said gears substantially only with the ends of its teeth, numeral keys, and means for controlling said toothed member from said numeral keys.

7. In an adding machine, the combination with a plurality of gears of approximately the same diameter but having different numbers of teeth, of a laterally movable gear adapted to coeperate directly with said first named gears, said laterally movable gear engaging with a portion of said first named gears on its pitch line and with another pon tion thereof beyond its pitch line, numeral keys, and means for controlling said laterally movable gear from said numeral keys.

8. In an adding machine, the combination with a plurality of gears of a proximately the same diameter but having ifferent numbers of teeth, a laterally movable gear adapted to cooperate directly with said first named gears, said laterally movable gear engaging with a part of said first named gears on its pitch line and with another part thereof substantially only with the ends of its teeth, numeral keys, and means for controlling said laterally movable gear from said numeral keys.

9. In an adding machine, the combination with a plurality of adding Wheels correspondceases teeth carried by said wheel, a comb for re-- turning said wheel to zero and engaging with a part only of said auxiliary teeth, and carrying bars released by said auxiliary teeth.

V 11. In an adding machine, the combination with an adding Wheel, of means for actuating-said addin wheel, a plurality of auxiliary teeth carrie by said adding wheel, a

comb for returning said adding wheel to zero and engaging with 9. art of said auxiliary teeth, a carrying bar orsaid adding wheel, and a releasing pawlslidingly mounted on said carrying bar and cooperating with said auxiliary teeth.

12. In an adding machine; the combination with an adding mechanism, a of a translating device movable step by step to actuate said adding mechanism, keys controlling said translatin device, and means for causing said trans ating device to remain in the same order during the movement of two of said keys. 13. In an adding machine, the combination with an adding mechanism of a translating device movable step by step to actuate said adding mechanism, a rack carried by said translating device, a feed pawl and a retaining pawl engaging with said rack. said rack being provided with a blank for sald retaining pawl opposite one of teeth for the feed pawl, and numeral keys adapted o be placedsuccessivelyinto engagement with the adding device by said translating device.

' anism, a lock for some of said keys'controlled- 14. In an adding machine, the combination with adding mechanism, of numeral keys, a translatlng device inte' osed between said numera keys and ad 'ng mechby said translating device, and a second look for other of said keys also controlled bysaid translating device.-

15. In an adding machine, the combination with an adding mechanism, of numeral keys, a translating device interposed between said numeral keys and adding mechanism, and a lock controlled by said translating device and movable into one position to look a portion of said keys and into another .position to lock other of said keys.

16. In an adding machine, the combination with an adding mechanism, of numeral tion with adding keys, a translatin device inteaposed between said numera keys and ad ng mechanism, a lock controlled by said translating device for locking some'ofsaid'rnrneral keys, and a second 3- also controlled by said translating device, said second lock bein movable into one position to lock a portion of said numeral keys and'into another position to lock other of said numeral keys.

17. In an adding machine, the combinamechanism, or numeral keys, a translatin device inter osed between said numera' keys and ad ing mechanism, a comb for locking said numeral keys, a rack carried by said comb, and a feed pawl enga ing said rack and actuated by said trans atmg device.

18. In' an adding machine, the combination with an adding mechanism, of numeral keys, .a' translating device interposed between said adding mechanism and numerai keys, a comb movable into. one position to look a portion of said numeral keys and into another position to lock other of said numeral keys, a rack carried by said comb,'a feed pawl engaging said rack, and means for operating said feed pawl from said translating device.

19. In an adding machine, the combination with an adding mechanism, ofnumerah keys, a translatin device interposed between said numeralkeys and adding mechanism, a comb movable in one position-to look a portion of the said numeral keys and into another position'to lock other of said numeral keys, a rack carried by said comb, a

feed pawl engaging said rack, means for op-' eratmg sald teedpawl from said translating device, and means for causing said translating device to remain in the same order during the operation of two of said numeral keys.

20. In an adding machine, the combination with an adding mechanism, of numeral keys, a translating device interposed between said adding mechanism and numeral keys, order keys for controlling the lateral movement of said translating device, a comb for locking said numeral keys, a rack carried by said comb, a feed pawl engaging said rack and actuated by said translating device, and means connected with said order keys for releasing said ieed pawl.

In testimony whereof, I have hereunto set my hand and afiixed my seal in the presence of the two subscribing witnesses.

G. N. HINCHMAN.

Witnesses:

W. 1%..ALEXANDER, ELIZABETH Bamnr. 

